Both Katya and Pierre are ruthless and cold: They spar verbally and physically and tease each other sexually, even as they refer to each other as father and daughter (which gives those scenes a creepy, incestuous vibe). They drink too much and lie through their teeth. Some bright spots: Katya seems like a genuine friend (she comforts a pal by phone), and Pierre seems like a concerned brother when he visits his sibling in a mental institution.
Pierre gets into a car accident and hurts his head; lots of screaming between the main characters; Katya hits Pierre, and he shoves her. She also throws things at him.
No outright nudity, but lots of references to sex (for example, Pierre recounts in detail how a transvestite performed a sexual act on him). Two women kiss briefly. Pierre and Katya kiss each other (aggressively) and, once, he positions himself between her legs. She struts in front of him, obviously trying to seduce him (but later, she tells him he looks like her father -- and he tells her she reminds him of his daughter).
Plenty of expletives, including "f--k" (and related versions, as in "f--kface"), "s--t," and the like. Women are referred to as "whores," plus there's one use of the word "c--t."
Some: references to Maker's Mark and Palm Pilot; a laptop computer is clearly an Apple; glimpses of brand names on water bottles and cigarettes.
Drinking, Drugs & Smoking
From beginning to end, the film is laced with substances. Both characters drink to near-oblivion (scotch, whiskey, rum -- you name it). Katya also smokes and snorts cocaine.